Include element in validationCallback

Fixes #591

src/Linkifier.test.ts

@@ -53,7 +53,7 @@ describe('Linkifier', () => {
     it('should enable link if true', done => {
       addRow('test');
       linkifier.registerLinkMatcher(/test/, () => done(), {
-        validationCallback: (url, cb) => {
+        validationCallback: (url, element, cb) => {
           cb(true);
           assert.equal((<HTMLElement>rows[0].firstChild).tagName, 'A');
           setTimeout(() => clickElement(rows[0].firstChild), 0);
@@ -65,7 +65,7 @@ describe('Linkifier', () => {
     it('should disable link if false', done => {
       addRow('test');
       linkifier.registerLinkMatcher(/test/, () => assert.fail(), {
-        validationCallback: (url, cb) => {
+        validationCallback: (url, element, cb) => {
           cb(false);
           assert.equal((<HTMLElement>rows[0].firstChild).tagName, 'A');
           setTimeout(() => clickElement(rows[0].firstChild), 0);

src/Linkifier.ts

@@ -160,7 +160,7 @@ export class Linkifier {
         const linkElement = this._doLinkifyRow(rowIndex, uri, matcher.handler, matcher.id === HYPERTEXT_LINK_MATCHER_ID);
         // Fire validation callback
         if (linkElement && matcher.validationCallback) {
-          matcher.validationCallback(uri, isValid => {
+          matcher.validationCallback(uri, linkElement, isValid => {
             if (!isValid) {
               linkElement.classList.add(INVALID_LINK_CLASS);
             }

src/Types.ts

@@ -11,4 +11,4 @@ export type LinkMatcher = {
   priority?: number
 };
 export type LinkMatcherHandler = (event: MouseEvent, uri: string) => boolean | void;
-export type LinkMatcherValidationCallback = (uri: string, callback: (isValid: boolean) => void) => void;
+export type LinkMatcherValidationCallback = (uri: string, element: HTMLElement, callback: (isValid: boolean) => void) => void;